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SLES/AES Production Plant
World-Leading Flash Evaporation & Continuous Neutralization Technology · Effective 1,4-Dioxane Control
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Sodium Lauryl Ether Sulfate (SLES/AES) Production Plant

World-Leading Flash Evaporation & Continuous Neutralization Technology · Effective 1,4-Dioxane Control
Technology & Process

Proprietary Flash Evaporation & Continuous Neutralization Process

Nanjing Qino Automatic Control Equipment Co., Ltd. has extensive experience and proprietary technology in AES/SLES production. Since building the first 5-ton/hour AES sulfonation unit for Zhejiang Namei Chemical in 2007, the company has developed world-leading proprietary technology in AES continuous flash neutralization.
Our AES production plant adopts an integrated Sulfonation + Continuous Flash Neutralization design, combined with proprietary flash degassing technology, effectively controlling 1,4-dioxane content while ensuring stable product quality meeting national premium standards.
Core Process Flow

Sulfonation Reaction System

• Shared or independent sulfonation system with LABSA plant.
• New multi-tube falling film sulfonation reactor with secondary protection air technology.
• Fatty alcohol ether (AEO) reacts with SO₃ for sulfation.
• Strict reaction temperature control to prevent raw material thermal decomposition.
• Key Control Point: SO₂ conversion rate must be stable before introducing AEO.

Continuous Flash Neutralization System (Core Technology)

1.Four-Material Precise Metering into Neutralization Pump:
• Alcohol ether sulfate (from sulfonation unit, mass flow meter precise metering).
• Liquid caustic (NaOH, mass flow meter control).
• Deionized process water (mass flow meter control).
• Recycled AES (10:1 reflux ratio).
2.High-Shear Mixing Reaction: Four materials fully mixed in neutralization pump.
3.Online pH Control: Inline pH meter continuous tracking, automatic adjustment of caustic addition.
4.Vacuum Flash Evaporation & Degassing:
• Vacuum control: -92KPa.
• Temperature control: 45±3℃.
• Reaction heat removal and degassing through perforated distribution plate.
• Cycle Ratio Control: Approximately 10:1, controlled by outlet pressure regulating valve and VFD.

Product Adjustment & Storage

• Buffer added to AES adjustment tank for pH adjustment.
• Degassed AES pumped to finished product tank.
• Active matter content adjusted by controlling process water addition.
Technical Features & Advantages
Feature
Qino Technology
Traditional Technology
Neutralization Process
 Continuous flash evaporation & degassing
Batch or ordinary continuous
1,4-Dioxane Control
 Proprietary technology, extremely low content
Relatively higher
pH Control
 Online continuous automatic adjustment
Manual or semi-automatic
Degassing Effect
 Vacuum flash, thorough degassing
Ordinary degassing
Product Quality
 Transparent, good stability
Possible turbidity
Active Matter Content
 Up to 70% high concentration
Generally 30-60%
Automation Level
 Fully automatic control
Semi-automatic or manual
Equipment Configuration Highlights

Sulfonation Reactor

New multi-tube falling film design (same as LABSA plant).

Vacuum Flash Tower

-92KPa vacuum, efficient degassing.

Online pH Meter

Continuous monitoring, automatic adjustment.

Neutralization Pump

High-shear mixing ensuring complete
reaction.

Mass Flow Meters

Precise metering of all materials.

DCS Control System

Fully automatic control, user-friendly HMI.
Applications & Markets

Core Raw Material For Personal Care & Detergent Industries

SLES (Sodium Lauryl Ether Sulfate) / AES (Alcohol Ether Sulfate) are important anionic surfactants widely used in personal care and detergent industries. Qino's AES production plants have been built for numerous domestic and international clients, with stable product quality highly praised by customers.
Main Application Areas
Personal-Care-Industr • Shampoo: Primary surfactant, providing rich foam and gentle cleansing-Unilever partners.
• Body Wash: Key ingredient with good foaming and skin affinity-Daily chemical enterprises.
• Facial Cleanser: Gentle cleansing, low irritation-Cosmetic brands.
• Toothpaste: Foaming agent and cleanser-Oral care brands.
Personal Care Industry
Primary-Market • Liquid Detergent: Primary active ingredient, good low-temperature solubility.
• Dishwashing Liquid: High-efficiency cleaning, easy rinse.
• Industrial Cleaner: Excellent emulsification and dispersion.
Detergent Industry
Typical Project References
Client
Project
Capacity
Year
Notes
Zhejiang Namei Chemical
AES Sulfonation Unit
5 ton/hour
2007
Processing for Qino, Zanyu
Guangdong Jiangmen Caixin
AES Sulfonation Unit
5 ton/hour
2008
Producing sulfonic acid, AES, AOS
Jiangsu Lianshui Xinyuan Bio
AES Sulfonation Unit
3.8 ton/hour
2015
Flash evaporation technology
Shandong Mingyin Daily Chemical
Sulfonation Unit
3.8 ton/hour
2019
AES unit planned
Saudi Arabia
AES Sulfonation Unit
1.6 ton/hour
2014
Export project
Philippines
AES Sulfonation Unit
5 ton/hour
2018
Custom Design
Raw Materials & Specifications

High-Quality Raw Materials Ensure Premium AES Products

Our AES production plant is designed to process high-quality raw materials. Through proprietary flash evaporation and degassing technology, products meet international standards with extremely low 1,4-dioxane content.
Raw Material Specifications
Fatty Alcohol Ether (AEO)
Parameter
Specification Requirement
Type
AEO₂ (Laureth-2) or AEO₃
Hydroxyl Value
160-180 mgKOH/g
Moisture
≤0.5%
Color
≤50 APHA
Appearance
Colorless to pale yellow liquid
Other Raw Materials
Material
Purpose
Specification
Liquid Caustic (NaOH)
Neutralizing agent
32-50% concentration
Deionized Water
Adjust active matter content
Conductivity <10 μS/cm
SO₃
Sulfating agent
≥99.5% purity
Product Quality Specifications
AES Product Specifications
(70% High Concentration)
Parameter
Specification
Notes
Active Matter Content
70±2%
High concentration product
pH Value (1% solution)
6.0-8.0
Neutral range
Color (Klett)
≤50
Transparent
1,4-Dioxane
≤30 ppm
Proprietary technology control
Appearance
Transparent viscous liquid
No turbidity
AES Product Specifications
(Standard Concentration)
Parameter
Specification
Active Matter Content
25-28% (liquid) / 70% (paste)
pH Value (1% solution)
6.0-8.0
Color (Klett)
≤100
Capacity Specifications
Model
Capacity (tons/year)
Floor Area (㎡)
Power Requirement (kW)
Q-AES-1000
1,000
400-500
200-300
Q-AES-3000
3,000
600-800
350-450
Q-AES-5000
5,000
900-1,200
500-700
Q-AES-10000
10,000
1,500-2,000
900-1,200
Custom
10,000+
Custom Design
Custom Design
Utility Requirements (5 Ton/Hour Example)
Utility
Consumption
Specification
Electricity
500-700 kW
440V/60Hz
Cooling Water
100-120 m³/hour
32°C inlet, 40°C outlet
Compressed Air
80-100 Nm³/hour
0.6 MPa, instrument grade
Nitrogen
50-80 Nm³/hour
99.9% purity
Steam
Self-sufficient (waste heat recovery)
0.4-0.6 MPa saturated steam
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 WhatsApp: +8613338813031
 Email: njqino@gmail.com 
 Add: Building 28, Botong Innovation Industrial Park, No. 2 Qiancheng Road, Liuhe District, Nanjing, Jiangsu Province, China

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